MLchartDataset catalogue

Photon log

Term · Oil and gas · MLC-T-OAG-002778

A log of the density of the material surrounding a completed well, recorded with a radioactive gamma-ray source and a detector on a nuclear fluid densimeter. Gamma photons from the source are scattered and absorbed by the surrounding material, so the count rate at the detector falls as density rises. It differs from a natural gamma ray log, which records radiation emitted by the rock itself.

Table 1. Record
IdentifierMLC-T-OAG-002778
FieldOil and gas
SubjectProduction Logging
Record as JSON 
{
  "id": "MLC-T-OAG-002778",
  "term": "Photon log",
  "field": "Oil and gas",
  "definition": "A log of the density of the material surrounding a completed well, recorded with a radioactive gamma-ray source and a detector on a nuclear fluid densimeter. Gamma photons from the source are scattered and absorbed by the surrounding material, so the count rate at the detector falls as density rises. It differs from a natural gamma ray log, which records radiation emitted by the rock itself.",
  "subject": "Production Logging",
  "url": "https://mlchart.com/terminology/oil-and-gas/photon-log/"
}

Record 2,959 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.